实验观测了水力直径为150 μm,宽深比3,通道壁面水接触角为130°的疏水矩形微通道内的流动冷凝过程.发现疏水微通道内的流型主要有珠状流、珠状-环状复合流、珠状-喷射复合流和弹状-泡状流.由于壁面的疏水性,喷射流处仍能观察到珠状凝结.珠状-喷射复合流的位置随入口蒸汽Reynolds数的增大而向通道出口移动,喷射频率随Rev增大而增大.珠状-喷射复合流之后为弹状-泡状流,喷射流产生汽泡会冲击前一汽泡并合并流向通道出口.
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